Bootstrap 4 个选项卡在选项卡 ID 中使用前导数字时不切换内容

Question

使用bootstrap v4 选项卡，当我使用前导数字作为选项卡ID 时，选项卡的内容不会切换。其他选项卡正常工作。带前导数字的选项卡本身会切换到活动状态，但不会显示相应的内容。

这是一个错误，还是我忽略了什么？

此代码几乎完全取自 bootstrap 文档，我只是在第二个选项卡中添加了一个前导数字：

<!DOCTYPE html>
<html lang="en">
  <head>
    <!-- Required meta tags -->
    <meta charset="utf-8">
    <meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">

    <!-- Bootstrap CSS -->
    <link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/css/bootstrap.min.css" integrity="sha384-rwoIResjU2yc3z8GV/NPeZWAv56rSmLldC3R/AZzGRnGxQQKnKkoFVhFQhNUwEyJ" crossorigin="anonymous">
  </head>
  <body>

    <ul class="nav nav-tabs" role="tablist">
      <li class="nav-item">
        <a class="nav-link active" data-toggle="tab" href="#home" role="tab">Home</a>
      </li>
      <li class="nav-item">
        <a class="nav-link" data-toggle="tab" href="#2-profile" role="tab">2-Profile</a>
      </li>
      <li class="nav-item">
        <a class="nav-link" data-toggle="tab" href="#messages" role="tab">Messages</a>
      </li>
      <li class="nav-item">
        <a class="nav-link" data-toggle="tab" href="#settings" role="tab">Settings</a>
      </li>
    </ul>

    <div class="tab-content">
      <div class="tab-pane active" id="home" role="tabpanel">... home</div>
      <div class="tab-pane" id="2-profile" role="tabpanel">... profile</div>
      <div class="tab-pane" id="messages" role="tabpanel">... messages</div>
      <div class="tab-pane" id="settings" role="tabpanel">... settings</div>
    </div>

    <!-- jQuery first, then Tether, then Bootstrap JS. -->
    <script src="https://code.jquery.com/jquery-3.1.1.slim.min.js" integrity="sha384-A7FZj7v+d/sdmMqp/nOQwliLvUsJfDHW+k9Omg/a/EheAdgtzNs3hpfag6Ed950n" crossorigin="anonymous"></script>
    <script src="https://cdnjs.cloudflare.com/ajax/libs/tether/1.4.0/js/tether.min.js" integrity="sha384-DztdAPBWPRXSA/3eYEEUWrWCy7G5KFbe8fFjk5JAIxUYHKkDx6Qin1DkWx51bBrb" crossorigin="anonymous"></script>
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/4.0.0-alpha.6/js/bootstrap.min.js" integrity="sha384-vBWWzlZJ8ea9aCX4pEW3rVHjgjt7zpkNpZk+02D9phzyeVkE+jo0ieGizqPLForn" crossorigin="anonymous"></script>
  </body>
</html>

Answer 1

那是因为元素ID不允许以数字开头。这只是一件 HTML 事情。

来源：ID’s Cannot Start With a Number

Bootstrap 4 个选项卡在选项卡 ID 中使用前导数字时不切换内容

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